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The Mode of Action of Levelling Agents in the Dyeing of Wool
Author(s) -
BROOKS JOHN H.
Publication year - 1974
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1974.tb03195.x
Subject(s) - cationic polymerization , dyeing , wool , sorption , ethylene oxide , chemistry , levelling , polymer chemistry , chemical engineering , materials science , organic chemistry , adsorption , composite material , polymer , cartography , engineering , copolymer , geography
When the rate of uptake of C. I. Acid Blue 138 on wool was held constant by continuously varying the temperature, either a non–ionic or a cationic ethylene oxide condensate effectively promoted level uptake of dye. Equilibrium sorption isotherms of the dye on wool in the presence of the cationic condensate showed a point of inflexion. Improved levelness in exhaustion dyeing was attained by delaying the addition of the cationic condensate until the concentration of dye had fallen to correspond to the point of inflexion in the isotherm.